think of it in the same way you think of volts and amps...
volts being the pressure and amps being the flow...
you are correct in saying the flow is the same anywhere in a given loop.(series)
same as with an electric loop.... current is the same, no matter where you measure.... (in a series loop )
The pressure will differ through out the loop.
most do not realize, but electric cct's and water-loops are more similar in there reactions than they are different.
Funny thing, I used to use water-loops to better understand electricity, when I was still young and stupid..... nowa days it's the other way around.... I show someone a bunch of resistors in series, on pops the light-bulb.... [pun intended]
